How can urban populations affect a water supply

They mostly affect it negatively. Often times, urban populations can overcrowd, overuse or pollute a water supply. Take the river Thames for example, in London. It's used so much that its waters are hardly safe to swim in, much less drink. Also, we cram water in reservoirs, making it safe for us, but keeping local wildlife from it.

Have a great night/day!

-Dylan (AKA Animus

when earth is in rotational motion around the sun,it displaces from its place.

when a ball is placed on an inclined surface it does both the rotational and circular motion.

explanation:

i think the answer would be b